Introduction to SNA Capabilities of Tandem NonStop Systems

Applications

Introduction to SNA Capabilities of Tandem NonStop Systems–134597

4-2

SNAX APIs

Applications can send and receive data through the SNAX access methods using one of

several application programming interfaces (APIs). Table 4-1 lists the APIs supported by

the SNAX access methods.

Applications are generally portable across access methods, although minor

modifications may be required.

Japanese Terminal Support

SNAX/XF and SNAX/CDF handle Japanese (Kanji and Katakana) character flows to

and from terminals.

Table 4-1. APIs Supported by SNAX Access Methods

API Description Notes

ADCCP-NRM Low-level API for transfer of SDLC

frames

Provided with EnvoyACP/XF

SNALU Low-level API; application must handle all

SNA flows

Provided with SNAX/XF,

SNAX/APN and SNAX/CDF

CRT High-level API for block-mode

communication with 3270 devices,

including 3270 and SNA character string

printers

Provided with SNAX/XF,

SNAX/APN and SNAX/CDF

ITI High-level API for line-mode

communication with 3270 devices

Provided with SNAX/XF,

SNAX/APN and SNAX/CDF

PRT High-level API for communication with

SNA printers

Provided with SNAX/XF

SNAX/APC High-level API handling SNA flows for

LU-LU session type 6.2

Separate product

SNAX/HLS High level API handling SNA flows for

LU-LU session types 0, 1, 2, 3, 4, and 7

Separate product

Exchange/SNA API using LU-LU session type 1 to read

and write records for batch file transfer

Separate product